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"Professor Aitken, I think." "He ought to know better. Any others?" "I couldn't understand them all. There was one of polarizing the island because of the steel structures; and the " "No human agency?" "What?" "No man or men are suspected of bringing this about?" "Oh, no! You don't think " "No, I don't think. I only imagine; and I haven't much basis for imagining.
Hence a plate of tourmaline, with its axis parallel to the beam, stops the light, and with the axis perpendicular to the beam transmits the light. A plate of selenite placed between the Nicol and the actinic cloud shows the colours of polarized light; in fact, the cloud itself plays the part of a polarizing Nicol.
How delicate may be the gradations of architectural design in building a molecule was well illustrated about 1850, when Pasteur discovered that some carbon compounds as certain sugars can only be distinguished from one another, when in solution, by the fact of their twisting or polarizing a ray of light to the left or to the right, respectively.
It was at this angle that the image of the tourmaline was completely quenched in our former experiment. It is called the polarizing angle. Sir David Brewster proved the angle of polarization of a medium to be that particular angle at which the refracted and reflected rays inclose a right angle. The polarizing angle augments with the index of refraction.
Along with this I purchased every possible accessory draw-tubes, micrometers, a camera lucida, lever-stage, achromatic condensers, white cloud illuminators, prisms, parabolic condensers, polarizing apparatus, forceps, aquatic boxes, fishing-tubes, with a host of other articles, all of which would have been useful in the hands of an experienced microscopist, but, as I afterward discovered, were not of the slightest present value to me.
This is effected by polarizing on the Higher Self, and thus raising the mental vibrations of the Ego above those of the ordinary plane of consciousness. It is akin to rising above a thing and allowing it to pass beneath you.
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